Attachment for well drilling derricks



P 1948. H. J. BROERS 2,439,714

AT'IAGHIENT FOR WELL DRILLING DERRICCKS Filed July 12, 1946 3 Sheets- Shut 1 IVE-.1

F I I I 1 g 0 y TE? a 2/ flwawaw April 13, 1948. H. J. BROERS 2,439,714

7 ATTACHHENT FOR WELL DRILLING DERRICKS Filed July 12, 1946 z Sheets-Sheet 2 Tea-- E A I'I'ORIYE'V' April 13, 1948.

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H. J. BROiERS v 2,439,714 ATTACHIENT FOR WELL DRILLING DERRICKS I Filed Jul 12. 1946 3 Sheets-Sheet a TE-i-S Patented Apr. 13, 1948 ATTACHMENT FOR WELL DRILLING DERRICKS Henry J. Broers, Powell, Wyo.

Application July 12, 1946, Serial No. 683,017

This invention relates to attachments for well drilling apparatus, and comprises an attachment for drilling derr'icks which facilitates the mani-. pu-lation or transfer of pipes or casings from a lodged position on the derrick to a position in line with the drilling operations or the previously positioned casing section.

It is an object of the invention to provide a structure which may be secured ,to a well drilling derrick having parts which are turnable with respect to a base plate so that it may swing from side to side for receiving the pipe section which is to be installed, novel means being provided for clamping and frictionally holding the casing while it is moved to a position for installation; novel means being also included for moving the clamping instrumentalities for forcing them into clamping position, and other means being pro;v

vided for moving them free of the pipe when the clamp operating means is to release the pipe.

It is furthermore an object of the invention to provide a mounting or carrier plate for the said operating instrumentalities which is turnable or oscillatable with respect to a base plate, which base plate is attached or anchored to the derrick; and it is furthermore an object to provide a fixed or stationary stub shaft or journal on which a bearing formed with or carried by the mounting or carrier plate is turnable.

It is furthermore an object to provide means 6 Claims. (Cl. 214-4) F'igure 1 illustrates a plan view of the apparatus with a pipein section;

Figure 2 illustrates a. view in side elevation, in which the pipe and a portion of the base is in section;

Figure 3 illustrates a plan view of the apparatus in a different position of adjustment as compared with that shown in Fig. 1;

Figure 4 illustrates a sectional view on the line 4-4 of Fig. 3;

Figure 5 illustrates a sectional view on the line 55 of Fig. 1;

Figure 6 illustrates a sectional view on the line rick. and II is a base plate hinged to the anchor for adjusting the jaws with respect to each other i so that they can be made to effectively clamp pipes of different diameters.

It is furthermore an object to provide means by which the base plate may be oscillatively mounted with respect to an anchor plate on the derrick so that said mounting or carrier plate with its jaws and the jaw operating mechanism may be swung upwardly clear of operations that may occur on the derrick.

It is a further object of the invention to provide a mechanism of the character indicated which may be readily installed or removed, and the parts of which are strong, durable and effective. I

With the foregoing and other objects in view, the invention consists in the details of construetion, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application, wherein like characters denote corresponding parts in the several views, and in which:

plate by the hinge members, generally identified by the numeral l2, and the base plate may swing upwardly and rearwardly so that the derrick may be cleared for actions other than those of transferring the pipes and placing them. The base plate has a peripheral flange ii! on which a carrier plate I 4 rides as it oscillates or turns on an approximately horizontal plane while carrying and placing pipes such as I 5, as will pres ently appear. A stub shaft or journal I6 is an chored to the base plate and it has anti-friction rollers ll, which rollers are engaged by a half bearing I8 formed at the inner end of the carrier plate I4 and held in place by a nut I8 threaded on the upper end of the stub shaft. The outer end of the carrier plate 14 is concave or inwardly curved, as at l9, to the general contour of the external surface of a pipe to be carried, and, arms 20 have their inner ends pivotally mounted on studs, such as 2|, having their lower ends anchored to the carrier plate. The arms 20 have lugs, such as 22, attached to them, as by welding or the like, and each lug has a threaded aperture 23, the threads of which are of the right and left hand type, for engaging similar threads on a screw 24, which screw is rotatably mounted in a yoke or stud 25 on the carrier plate, it being shown that the screw has a flange on each side of the yoke for holding the screw againstaxial movement. The threads of the screw are illustrated in detail, Figure 7, and the purpose of the screwand the threaded lugs is to permit an adjustment of the arms 20 so that the space betweenthe arms will accommodate pipes of difplied to an end of the screw so that it can be. turned to adjust the said arms.

Clampin jaws. such as 21, coast to embrace and clamp the pipe II, and the inner ends of the jaws are also pivoted onthe studs 2| so that the said studs act as mountings forthe arms and the clamps, and they also actas a support for the cross plate 28 to which a pedal 29 is hinged.

The under surface of the pedal 29 has bearings, such as 30, in each of which a ball, such as 3|, is partially rotatable, and each ball is integral with a threaded shank or rod 32, the threads of which engage the threaded apertures of a link 33, and each link is oscillatably mounted on a pin or bolt 34, adjustable in apertures -35 in spaced flanges 38, pairs of which are carried by each jaw 21 so that when the pedal is depressed by foot pressure or the like, the jaws are forced apart for the reception betweenthem of a pipe I 5. As shown in Fig. 6, the throw of the jaws by the operation of the pedal may be increased or diminished by the adjustment of the'threaded rods 32 in the links 33, and the parts are held at their adjusted positions by jamb nuts 31 and the wing nuts 38.

The jaws are retracted or drawn together by a spring 39, the ends of which are connectedto.

on the pedal, the jaws will release the pipe.

I claim:

1. An attachment for drilling derricks comprising a suitably mounted base, a stub shaft anchored to the base and projecting thereabove, a carrier plate tumably mounted on the stub shaft, spaced studs having their ends secured in the carrier plate, arms pivotally mounted,

on the said studs and projecting beyond the edge .of the base, clamping jaws pivoted on said studs above the arms, means for'adjusting the arms with relation to each other for varying the space between them, means for drawing the jaws into clamping contact with a pipe, and means for forcing the jaws apart.

2. An attachment for drilling derricks comprising a suitably mounted base, a stub shaft anchored to the base and projecting thereabove, a carrier plate turnably mounted on the stub shaft, spaced studs having their ends secured in the carrier plate, arms pivotally mounted on the said studs and projecting beyond the'edge of the base, clamping jaws pivoted on said studs above the arms, means for adjusting the arms with relation to each other for varying the space between them, means for drawing the laws into clamping contact with a pipe, said means comprising apertured members attached to the jaws,

eye-bolts, one of which extends through each of the members, means for adjustably holding the bolts in operative positions, and a spring interposed between and attached to the eye-bolts whereby the tension of the spring holds the jaws in clamping engagement with a pipe, and means for forcing the jaws apart.

3. A pipe transferring mechanism comprising a suitably mounted base, a carrier plate tumably mounted on the base, arms pivotally mounted on the carrier platein spaced relation to each other, said arms projecting beyond. the carrier plate, means for moving the arms toward and away from each other, clamping jaws pivotally mounted on the carrier plate, means for drawing the clamping jaws together for frictionally clamping and holding a pipe between them, and

means for moving the jaws against the action of the last mentioned means.

4. A pipe transferring mechanism comprising a suitably mounted base, a carrier plate-turnably mounted on the base, arms pivotally mounted on the carrier plate in spaced relation to each other, said arms projecting beyond the carrier plate, means for moving the arms toward and away from each other, clamping jaws pivotally mounted on the carrier plate, means for drawing the clamping jaws together for frictionally clamping and holding a pipe between them, said means comprising members stationary with the jaws, eye-bolts adjustable in the last mentioned means, and a spring connecting the eye-bolts for oper ating the jaws into engagement with the pipe,

and means for moving the jaws against the action of the last mentioned means.

5. A pipe transferring mechanism comprising a suitably mounted base, a carrier plate tumably mounted on the base, arms pivotallyv mounted on the carrier plate in spaced relation to each other, said arms projecting beyond the carrier plate, means for moving the arms toward and away from each other, clamping jaws pivotally mounted on the carrier plate,-means for drawing the clamping jaws together for frictionally clamping and holding a pipe'between them, and means for moving the jaws against the action 01' the last mentioned means, including a hinged pedal, bearings on the under side of the pedal, threaded rods each havinga ball turnable in one of the bearings, a link connected to each rod, and means for connecting each of the links to one of the jaws whereby downward movement of the pedal spreads the said jaws;

6. An attachment for transferring pipe, a suitably mounted base, a carrier plate turnably mounted on the base, spaced arms pivotally mounted above the base andprojecting beyond the edge of the base, clamping jaws pivotally mounted above the said arms, meansfor adjust- I ing the arms with relation-13,8 c

I ether for varying the space between them}, means for drawing the jaws into clamping contact with a pipe between the arms, and means for forcing the jaws apart.

' HENRY .BROERS. 

